CN115195872A

CN115195872A - Inner plate of engine hood and engine hood

Info

Publication number: CN115195872A
Application number: CN202110376244.XA
Authority: CN
Inventors: 王子叶; 李兵; 孙为; 李才云; 汪定学
Original assignee: PSA Automobiles SA
Current assignee: PSA Automobiles SA
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2022-10-18
Also published as: EP4071031A1

Abstract

The invention provides an inner plate of an engine hood, which is suitable for being connected with an outer plate of the engine hood, wherein the inner plate is provided with a plurality of lightening holes, the lightening holes are connected by structural beams, the edges of at least part of the lightening holes are provided with first bonding parts which protrude out and are suitable for being connected with the outer plate, and reinforcing pieces are arranged between the first bonding parts. The invention effectively avoids the influence of the thermal deformation of the inner plate on the bonding part by arranging the reinforcing piece, thereby ensuring that the inner plate and the outer plate of the engine hood have enough and effective bonding area. The invention also provides an engine cover.

Description

Inner plate of engine hood and engine hood

Technical Field

The present invention relates generally to the field of vehicle body parts, and more particularly, to an inner panel of a hood and a hood including the inner panel.

Background

The engine hood belongs to an important part of a vehicle body, seals an engine cabin, plays roles of water prevention, dust prevention, heat insulation and noise reduction, has a shape as an important part of the appearance effect of the whole vehicle, and has corresponding requirements on gaps and surface differences with a fender, a headlamp, a front bumper, a ventilation grille, a windshield wiper cover plate and a front windshield glass, so that the engine hood has certain rigidity, and is prevented from deforming during manufacturing, transportation and assembly to influence the appearance quality. In addition, hood performance is subject to national legislative constraints such as pedestrian protection requirements, exterior protrusion requirements, etc., and must be designed with a compromise.

In prior designs, the hood typically included an outer panel and an inner panel. Typically, the outer and inner plates are glued in a welding shop for adhesive bonding, at which time the adhesive between the outer and inner plates is in a "semi-solid" state. When the glued engine hood reaches a paint spraying workshop, the high temperature of the paint spraying workshop can cause the thermal deformation of the inner plate, and the thermal deformation of the inner plate can pull the original semi-solid adhesive to deform or even break, so that the degumming condition is generated. After the bonding glue is cooled and solidified, the effective bonding area between the outer plate and the inner plate is greatly reduced. In a severe case, the outer panel may fly out when the vehicle is running at a high speed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides an inner plate of an engine hood and the engine hood comprising the inner plate, and solves the problem of degumming of the inner plate due to thermal deformation.

To this end, according to a first aspect of the present invention, there is provided an inner panel of a hood, the inner panel being adapted to be connected to an outer panel of the hood, wherein the inner panel is provided with a plurality of lightening holes connected by structural beams, and with first bonding portions protruding at least partially at the edges of the lightening holes so as to be adapted to be connected to the outer panel, and reinforcements are provided between the first bonding portions.

The present invention may further include any one or more of the following alternatives in accordance with the above technical concept.

In some alternatives, the reinforcement is configured as a first boss protruding from the structural beam toward the outer panel between two adjacent lightening holes.

In certain alternatives, the first boss is not in contact with the outer plate.

In some optional forms, the first bonding part is provided with a gluing positioning point.

In some alternatives, the inner panel is further provided with a second bond adapted to connect with the outer panel, the second bond being located at a rear region of the inner panel.

In some alternatives, the second adhesive portion is configured as a protruding face protruding from the inner panel toward the outer panel and arranged in a lateral direction.

In some alternatives, a second boss is provided between the second adhesive portion and the rear edge of the inner panel, projecting toward the outer panel.

In certain alternatives, the second boss is not in contact with the outer plate.

In some optional forms, a gluing positioning point is arranged on the second bonding part.

According to another aspect of the present invention, there is also provided an engine cover comprising an outer panel and an inner panel of the engine cover according to the first aspect of the present invention, an outer edge of the outer panel being hemmed to an outer edge of the inner panel.

According to the engine hood, the bonding parts are arranged on the edges of at least part of the lightening holes of the inner plate of the engine hood, the reinforcing pieces are arranged among the bonding parts, the influence of the thermal deformation of the inner plate on the bonding parts is effectively avoided by arranging the reinforcing pieces, and further, the sufficient and effective bonding area between the inner plate and the outer plate of the engine hood is ensured.

Drawings

Other features and advantages of the present invention will be better understood by the following detailed description of alternative embodiments, taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts, and in which:

FIG. 1 is an exploded schematic view of a hood according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the inner panel of the hood of FIG. 1;

FIG. 3 is a view similar to FIG. 2 showing the adhesive applied to the first and second adhesive segments;

FIG. 4a is a schematic view of the hood as viewed from the inner panel side after the inner and outer panels are joined, and FIG. 4b is a partially enlarged view of FIG. 4a at A;

FIG. 5a is a schematic cross-sectional view at section line B-B in FIG. 4B, and FIG. 5B is a schematic cross-sectional view at section line C-C in FIG. 4B;

FIG. 6 is an enlarged partial schematic view at D of FIG. 4 a;

fig. 7a is a schematic cross-sectional view at section line E-E in fig. 6, and fig. 7b is a schematic cross-sectional view at section line F-F in fig. 6.

Detailed Description

Exemplary embodiments will now be described with reference to the accompanying drawings in order to disclose the advantageous teachings of the present invention. It should be understood, however, that the description herein of specific embodiments is merely illustrative of specific ways to make and use the invention, and is not intended to limit the scope of the invention. The expressions of structural positions of respective components such as up, down, left, right, front, rear, etc. in the description are not absolute, but relative. When the respective components are arranged as shown in the drawings, these directional expressions are appropriate, but when the positions of the respective components in the drawings are changed, these directional expressions are also changed accordingly.

In this specification, the terms "first", "second" and "third" are not used to limit the order and number of components unless otherwise specified.

In this specification, the longitudinal direction of the hood and its inner panel corresponds to the longitudinal direction of the vehicle, the lateral direction of the hood and its inner panel corresponds to the lateral direction of the vehicle, and the front and rear portions of the hood and its inner panel are referred to the front-rear direction of the vehicle.

As shown in fig. 1, the hood 100 according to the present invention includes an inner panel 10, an outer panel 20, and other components (e.g., hinges, latches, etc.). Wherein the inner panel 10 is glued in a welding shop to be adhesively connected with the outer panel 20. With reference to the schematic top views of the inner panel 10 shown in fig. 2 and 3, in particular, fig. 3 shows the glue application position of the inner panel 10. It can be seen that the inner panel 10 is provided with a plurality of lightening holes connected by structural beams and provided with first adhesive portions projecting at least partially at the edges of the lightening holes suitable for being connected to the outer panel. In an alternative embodiment, the inner panel 10 is provided in its mid-region with six lightening holes 1, the six lightening holes 1 preferably being arranged symmetrically with respect to the longitudinal axis of the inner panel 10, and the six lightening holes 1 being connected by structural beams 2, wherein the structural beams 2 comprise a first structural beam 21 arranged substantially in the transverse direction and a second and a third

structural beam

22, 23 arranged substantially in the longitudinal direction, i.e. the six lightening holes 1 are separated by the first, second and third

structural beams

21, 22, 23. The edge of each lightening hole 1 is provided with a first adhesive portion 3 protruding therefrom, the first adhesive portion 3 being adapted to be connected to an outer panel 20, the first adhesive portion 3 protruding towards the outer panel 20 with respect to the structural beam 2, as shown in fig. 2 to 3. Preferably, in order to avoid the influence of the thermal deformation of the inner panel 10 on the degree of adhesion of the first bonding portion 3 of the inner panel 10 to the outer panel 20 in the paint shop, a reinforcement is provided between the first bonding portions 3, which is preferably configured as a first boss 4 protruding from the structural beam 2 toward the outer panel 20 between two adjacent lightening holes 1.

As shown in fig. 4a to 5b, in the engine hood 100 formed after the inner panel 10 and the outer panel 20 are connected, when viewed from the inner panel 10 side, the first bonding portion 3 forms a first rubberized surface 31, and the structural beam 2 forms a first structural surface 101 spaced apart from the outer panel 20, and the first structural surface 101 is in an arc-shaped transition to the first rubberized surfaces 31 on both sides thereof. Taking the first elevation 4 shown in fig. 4a in the middle region of the inner panel 10 as an example, this first elevation 4 projects from the first structural surface 101 towards the outer panel 20. Preferably, the first boss 4 does not contact the outer panel 20, and a spacing of height H1 is formed between the first boss 4 and the outer panel 20, the height H1 being smaller than a spacing height H2 between the first structural surface 101 and the outer panel 20. Due to the fact that the heights of the H1 and the H2 are different, the inner plate 10 obtains certain bending resistance at the glue coating surface 31, and the bending resistance is used for responding to thermal deformation of the inner plate 10 at the glue coating surface 31 during high-temperature baking. As mentioned above, the first bonding portion 3 protrudes toward the outer panel 20 relative to the structural beam 2, a hollow support structure is formed between the structural beam 2 and the outer panel 20, and the first boss 4 is not in contact with the outer panel 20, so that a continuous hollow support structure is maintained between the structural beam 2 and the outer panel 20, thereby ensuring that the engine cover (especially the middle area of the engine cover) has a certain cross-sectional bending resistance.

It is further preferred that the rear region of the inner panel 10 is also arranged with a glue-coated face to strengthen the connection between the inner panel 10 and the outer panel 20.

In an alternative embodiment, as shown in fig. 3 and 6, the inner panel 10 is further provided with a second adhesive portion 5 adapted to be connected to the outer panel 20, the second adhesive portion 5 being located in a rear region of the inner panel 10. Preferably, a second boss 6 protruding toward the outer panel 20 is provided between the second adhesive portion 5 and the rear edge 11 of the inner panel 10. Specifically, the second bonding portion 5 is configured as a projecting surface that projects from the inner panel 10 toward the outer panel 20 and is arranged in the lateral direction, the projecting surface forming the second painted surface 51. As shown in fig. 6 to 7b, a second structural surface 102 spaced apart from the outer panel 20 is formed between the second rubberized surface 51 and the rear edge 11 of the inner panel 10, the second boss 6 projecting from the second structural surface 102 towards the outer panel 20. Preferably, the second boss 6 does not contact the outer plate 20, and a spacing of a height H3 is formed between the second boss 6 and the outer plate 20, the height H3 being smaller than a spacing height H4 between the second structure surface 102 and the outer plate 20. Due to the fact that the heights of the H3 and the H4 are different, the inner plate 10 obtains certain bending resistance at the glue coating surface 51, and the bending resistance is used for responding to the thermal deformation of the inner plate 10 at the glue coating surface 51 during high-temperature baking. In particular, the absence of the second bosses 6 in contact with the outer panel 20 allows a continuous hollow support structure to be maintained between the second structural surface 102 and the outer panel 20, so as to guarantee a certain section bending resistance of the bonnet (in particular the rear region of the bonnet).

For the purpose of automatic gluing, it is preferable that the first and

second bonding parts

3 and 5 are provided with gluing positioning points, and referring to the exemplary embodiment shown in fig. 4b, the first bonding part 3 is provided with a plurality of gluing positioning points 32, so that the gluing robot can automatically glue by identifying the gluing positioning points.

The present invention also provides an engine cover 100, as shown in fig. 7a and 7b, in which the outer edge of the outer panel 20 is hemmed with the outer edge of the inner panel 10, and specifically, the outer panel 20 forms a hemming groove 201, and the hemming groove 201 receives and crimps the outer edge of the inner panel 10.

In a preferred embodiment, the inner panel 10 is hemmed at its outer edges by the outer panel 20, with a rubberized face disposed in a central region of the inner panel 10. Since the middle region of the inner panel 10 is less affected by the crimping force of the outer panel 20 to the inner panel 10, the middle region of the inner panel 10 may be more easily deformed in theory, and therefore, in order to prevent the rubberized surface from being degummed due to the thermal deformation of the inner panel 10, it is preferable to arrange a reinforcement in the middle region of the inner panel 10. Those skilled in the art will appreciate that the number and location of the stiffeners is not limited by the drawings. In an exemplary embodiment of the invention, the glue application surfaces are arranged at the edges of the lightening holes, and the reinforcement is arranged on the structural beam between adjacent lightening holes.

It should be understood herein that the embodiments shown in fig. 1-7 b are merely illustrative of alternative shapes, sizes, and arrangements of various optional components according to embodiments of the present invention, however, they are merely illustrative and not restrictive, and that other shapes, sizes, and arrangements may be adopted without departing from the spirit and scope of the present invention.

While the technical content and the technical features of the invention have been disclosed, it should be understood that various changes and modifications of the concept disclosed above can be made by those skilled in the art within the spirit of the invention, and all of them are included in the scope of the invention. The above description of embodiments is intended to be illustrative, and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. An inner panel of an engine hood, the inner panel being adapted to be connected to an outer panel of the engine hood, characterized in that the inner panel is provided with a plurality of lightening holes, the plurality of lightening holes being connected by structural beams, and at least part of the edges of the lightening holes being provided with first bonding portions projecting therefrom adapted to be connected to the outer panel, a reinforcement being provided between the first bonding portions.

2. The hood inner panel according to claim 1, wherein the reinforcement is configured as a first boss protruding from a structural beam toward the outer panel between adjacent two lightening holes.

3. The hood inner panel of claim 2 wherein the first boss is not in contact with the outer panel.

4. The hood inner panel according to claim 1, wherein the first adhesive portion is provided with an adhesive anchor point.

5. The hood inner panel according to any one of claims 1 to 4, wherein the inner panel is further provided with a second adhesive portion adapted to be connected with the outer panel, the second adhesive portion being located at a rear region of the inner panel.

6. The hood inner panel according to claim 5, wherein the second adhesive portion is configured as a convex surface that protrudes from the inner panel toward the outer panel and is arranged in a lateral direction.

7. The hood inner panel according to claim 6, wherein a second boss protruding toward the outer panel is provided between the second adhesive portion and a rear edge of the inner panel.

8. The hood inner panel of claim 7 wherein the second boss is not in contact with the outer panel.

9. The hood inner panel according to claim 5, wherein the second adhesive portion is provided with an adhesive anchor point.

10. An engine cover characterized by comprising an inner panel of the engine cover according to any one of claims 1 to 9 and an outer panel, the outer edge of the outer panel being hemmed against the outer edge of the inner panel.